CURRENT SENSOR

摘要

Provided is a current sensor, wherein influence of a disturbance magnetic field is reduced, and deterioration of current measurement accuracy is suppressed. The current sensor is characterized in being provided with a first magnetic sensor (12a) and a second magnetic sensor (12b), which are disposed at the periphery of a current line (11), detect an induction magnetic field generated due to a current flowing in the current line (11), and which respectively have sub-sensitivity axes in the direction that orthogonally intersects respective main sensitivity axes. The first magnetic sensor (12a) and the second magnetic sensor (12b) are disposed by having the current line (11) therebetween, such that the main sensitivity axis direction of the first magnetic sensor (12a) does not orthogonally intersect the direction of the induction magnetic field generated due to the current flowing in the current line (11), and the main sensitivity axis direction of the second magnetic sensor (12b) does not orthogonally intersect the induction magnetic field generated due to the current flowing in the current line (11), and such that the main sensitivity axis direction of the first magnetic sensor (12a) and that of the second magnetic sensor (12b) are in the same direction, and the sub-sensitivity axis direction of the first magnetic sensor (12a) and that of the second magnetic sensor (12b) are in the same direction, or such that the main sensitivity axis direction of the first magnetic sensor (12a) and that of the second magnetic sensor (12b) are in the reverse directions, and the sub-sensitivity axis direction of the first magnetic sensor (12a) and that of the second magnetic sensor (12b) are in the reverse directions.